Compound for treating glass surfaces.



' UNITED STATES PATENT OFFICE.

RICHARD HOGAN, OF LOCHGELLY, SCOTLAND.

COMPOUND FOR TREATING GLASS SURFACES.

Specification of Letters Patent.

Patented Sept. 10, 1907.

Application filed January 8,1907. Serial No- 961,327.

when applied to mirrors, to windows of engine cabs, and to other surfaces of glass where the condensation of' moisture is always objectionable, and sometimes a serious matter.

The compound consists oftwo parts of common candle wax to one part of pure glycerin. These ingre-. dients are mixed in the following manner:-The candle wax is reduced to a' liquid state and the required portion of glycerin is poured upon a metal tray'which is previously warmed to prevent a too rapid solidifica-' tion of the wax. The liquefied wax is then poured upon the glycerin in the tray and is rapidly and thoroughly mixed therewith. As soon as the mixture begins to set or harden it isplaced in suitable molds and molded into any shape which it may be found convenient'to employ. v

' The candle wax employed by me is a compound of pure bees wax with any suitable vegetable wax, such as Japan wax, with a small proportion of hard paraffin. The analysis of one ofthe candle waxes I have used shows that it contains seventy-five percent of pure bees wax andapproximately twenty-five percent of vegetable waxes, the proportion of paraffin being prac.-

tically-negligible. In these candle waxes seventyfive percent of bees wax is guaranteed but very often the real percentage of bees wax will run as high as.

eightyfive or ninety percent. The cakes or blocks into which the' compound is molded may of course, be of various sizes and shapes according to'the use to which it is to be placed.

The above proportions are the preferred ones but it will be obvious that a slight variation in the proportions can be permitted without destroying the value of the compound for the use above'mentioned.

The glass surface to be treated should be cleaned and dried, and the composition is rubbed slightly over slightly warm cloth until all traces of the "composition disappear. The glass will then take on -ahighly. polished aspect and the"cond'ensation of moisture "upon the surfaces 'so.treated is effectively guarded against. Mirrors so treated have after the treatment above de- I this surface. The glass is then rubbed brisklywith a scribed, been washed with warm vwater and soap and dried and have then been breathed upon ,and no trace of moisture left upon; the surface, so that the effect of Lthe compound, upon a glass surface is not destroyed by subsequent washing of the surface to remove dirt;v Having thus fully described my invention, what I claim. as new and desire to secure by Letters Patent, .is:

A'compound for treating glassspr-faces consisting of two partsof-a waxy material, and one part of glycerin.

' RICHARD HOGAN.

Witnesses: v

"Gr-Jones one,

' FREDERICK PIATT. 

